Software Engineer Jobs in Wales, United Kingdom

Join Graphcore's Software Infrastructure team as a Build Engineer, shaping tools that streamline ML software delivery. You’ll design and maintain internal tooling for building, testing, and integrating the machine‑learning stack, ensuring reproducible, secure builds across distributed HPC platforms.

Graphcore's Software Infrastructure team is building tools and services to scale and manage infrastructure for the Machine Learning Software Stack. As a Senior Software Engineer in Build Engineering, you will develop internal tooling for building, testing, and integrating the ML Software Stack, provide guidance on build practices and dependency management, and work closely with QA and development teams to ensure reproducible builds in secure, sandboxed environments.

Join the Imaris software development team within the Technical Business Unit at Oxford Instruments Andor as a Machine Learning Software Engineer or Senior Machine Learning Software Engineer. Research, develop, and deploy advanced machine learning solutions for image analysis, image processing, object detection, and segmentation, integrating algorithms into high-performance desktop applications and contributing to the wider C++ application architecture and codebase.

Reinvention Deployment Engineering pods at Accenture build the largest Forward Deployed Engineer capability, embedding AI platform expertise directly inside client enterprises. The role leads end‑to‑end AI platform deployments, owns programme‑level outcomes, architects full‑stack solutions, and shapes AI adoption strategy for C‑suite stakeholders.

Silicon Engineering Documentation Tools team at Apple builds a platform of CLIs, UIs, and APIs that enable silicon engineers to author and verify hardware specifications for Apple’s industry‑leading chips. The role designs, develops, and optimizes these tools, troubleshoots performance bottlenecks in a JVM‑based toolchain, and collaborates with documentation support to train and guide silicon designers.

The Core Engineering team at Goldman Sachs is a global group of 2,500+ engineers and scientists building and operating mission-critical platforms for risk analysis, financial reporting, budgeting, and regulatory compliance. As a Software Engineer - Associate in Birmingham, you will work as an SRE Engineer to keep production services healthy, monitored, automated, and scalable, collaborating with engineering teams to improve reliability and reduce downtime.

Engine by Starling is a fintech SaaS platform powering banks worldwide. The Staff Software Engineer (Team Lead) will coach and mentor a high‑performing backend team, lead complex projects from inception to production, and shape the platform’s architecture and tooling.

As a Staff Software Engineer on Coder’s Agentic Engineering team, you’ll shape the systems behind Coder’s agentic development experience, working across the agent harness, integrations, and workflows that connect agents with real development environments. You’ll stay hands-on while setting technical direction—designing and building production systems in Go (with React and TypeScript where needed), evolving agent execution, tool use, context management, streaming, and long-running workflows, and

The Revenue Automation and Data team within Roku's Advertising organization drives financial automation and data solutions across the advertising ecosystem. As a Senior Software Engineer in this hybrid Manchester, United Kingdom role, you will architect and maintain production-grade data products and APIs, design large-scale data pipelines, and collaborate with Finance, Accounting, and Analytics partners.

Coder’s Agentic Engineering team builds the systems behind Coder’s agentic development experience, connecting agents with real development environments. As a Staff Software Engineer, you’ll set technical direction for the agent harness, integrations, and workflows while staying hands-on—designing and building production systems in Go, evolving agent execution and tool use, and leading complex projects from ambiguity to production.

Public Cloud Engineering – Infrastructure Platforms at J.P. Morgan builds market‑leading, secure, and scalable cloud services for the firm. As a Lead Software Engineer you will design and deliver high‑quality production code, drive adoption of AI‑assisted development tools, and mentor the team on responsible AI use.

Unitary remote-first team building AI-powered Virtual Agents that automate complex workflows for midmarket businesses. As a Senior Software Engineer you will own and evolve the frontend product surfaces, re‑architect the codebase into a scalable component platform, and collaborate closely with product, design, and backend engineers to deliver reliable, user‑friendly interfaces.

SiXworks builds secure digital solutions for Defence and National Security missions. As a Software Engineer you design, build, and deliver secure Android and backend services using Kotlin, Rust/Python/Go, Docker, and CI/CD pipelines to enable faster, safer decision‑making for critical operations.

Landmark, a Halliburton company, builds software and data platforms that enable the global energy industry to make better decisions. The Software Engineer owns the full development cycle for features, from specification through design, implementation, testing, and delivery, while mentoring junior engineers and improving code quality.

Foundation Health is building an AI-powered digital pharmacy platform that integrates with EHR systems to simplify complex healthcare workflows. The Software Engineer designs and ships features using modern Node/TS/GCP stack, leveraging OpenAI, Langfuse, and Vertex AI to embed AI capabilities into production.

Engine by Starling seeks a Staff Software Engineer to lead complex projects, drive technical excellence, and shape the future of its SaaS banking platform.

The Triage Intelligence and Debug Engineering team at Apple ensures OS stability for over two billion devices by root-causing crashes and panics. This Software Engineer role involves investigating system-level failures, building automation pipelines, and applying ML techniques to improve reliability.

Mark43 empowers communities with scalable software for public safety. Senior Software Engineer leads AI-enabled engineering, designing multi-agent systems, orchestrating AI agents, integrating generative AI into codebase, mentoring, building AI-powered interfaces, evaluating AI contributions, and driving product impact.

Specialist Software Development team at RTX UK builds secure, mission‑critical software for defence, intelligence and cyber programmes. The Principal Software Engineer designs and builds applications, collaborates with stakeholders and drives technical direction while delivering DevSecOps, AI/ML and geospatial intelligence capabilities.

Public Cloud team at J.P. Morgan builds secure, scalable cloud‑native services for the firm. As a Software Engineer III you will design, develop and operate resilient AWS workloads, create architecture artifacts, and leverage AI‑assisted coding tools to improve code quality and delivery speed.